Defining the two revenue streams
Google's owned-sites category included advertising associated with Google Search, YouTube, and other company-operated services. The network category covered advertising technology and distribution products that placed advertising on third-party sites and applications.
Within the reported Google segment, these categories and a smaller “Other” line made up the revenue picture. Advertising remained the dominant component, but its internal mix was moving toward Google-controlled destinations.
Growth widened the gap
Historical disclosures showed owned-site advertising expanding more quickly than network-member revenue over several years. By the second quarter of 2016, owned properties accounted for more than four-fifths of Google's advertising revenue, compared with a materially smaller share earlier in the decade.
That development should not be read as a complete measure of market position by itself. It did, however, show that the company was relying more heavily on services where it could shape the product, audience experience, ad formats, and commercial relationships.
Paid clicks explained much of the contrast
The company's reported operating metrics pointed to diverging activity levels. Paid clicks on Google-owned properties had increased strongly over the preceding two years, while network paid clicks were broadly flat over the same comparison period.
Management attributed owned-property activity to factors including video advertising, product and format improvements, a wider advertiser base, and the ongoing movement of audience activity to mobile devices. Those drivers were not equally available to a network business built around third-party inventory.
Volume rose while pricing mix changed
Changes in clicks and changes in cost per click need to be read together. A volume trend alone cannot describe product mix, device mix, or revenue quality.
Cost per click on owned properties was lower than it had been two years earlier in the historical data, in part because of changing formats and a greater contribution from lower-priced video engagement advertising. Network pricing was comparatively stable over that period. These are mix effects as much as simple price signals.
Traffic costs reveal different economics
The distinction mattered for costs as well as revenue. For network advertising, Google shared a substantial part of revenue with third-party publishers. On owned sites, traffic acquisition costs were much lower as a percentage of revenue, though operating the services themselves involved other significant expenses.
Traffic acquisition costs for owned properties included payments tied to distribution arrangements, such as search placement in browsers. Historical reporting suggested these costs were rising as competition for placement intensified. Even so, the structural difference from network revenue remained considerable.
The strategic trade-off
A larger owned-property mix can support a more direct relationship with users and advertisers, along with a potentially different margin profile. It also places more responsibility for future growth on the company's ability to create, retain, and monetize audiences on services it controls.
Video, mobile formats, subscriptions, and newer product categories were therefore relevant not merely as adjacent initiatives, but as potential ways to extend the sources of value available within the company's own ecosystem. The historical record supports a measured conclusion: the revenue mix was becoming more concentrated in owned properties, with both economic benefits and strategic demands.